Geoege dunn



(No Model.)

G. DUNN.

LEADER'FOR PAPER GALENDER ROLLS. v I N0. 364,710. Patented Juel l, 1887'.

i i/moses M I I 32313 Qffozucuo fig? UN TED STATES PATENT Orrren.

GEORGE DUNN, OF LEE, MASSACHUSETTS, ASSIGNOR OF ONEI-IALF TO THOMAS A. BOYNE, OF SAME PLACE.

LEADER, FOR PAPE'R-CALENDER. ROLLS.

SPECIFICATION forming part of Letters Patent No..364,'710, dated June 14, 8 I Application filed February 152, 1887. Serial No; 227,407. (No model.)

To aliwham it may concern Be it known that I, GEORGE DUNN, a citizen of the United States, residing at Lee, in the county of Berkshire and State of Massachusetts, have invented anew and useful Improvement 1n Automatic Leaders forPaper-Oalender Rolls, of which the following is a specification.

My invention relates to an improvement in automatic leaders for paper-calender rolls; and it consists in the peculiar construction and combination of devices that will be more fully set forth hereinafter, and particularly pointed out in the claim.

In the drawings, Figure 1 is aside elevation of a machine embodying my improvements. Fig. 2 1s a vertical sectional view of the same, taken on the line :0 x of Fig. 3. Fig. 3 isa front elevation, partly in section. Fig. 4 is a detail View.

A represents a suitable vertical frame, and B represents axvertical series of calender-rolls, which are journaled horizontally in the sides of the frame A. The upper and lower rolls B of the series have twice as great a diameter asthe intermediate rolls, B and the faces ofthe sald top and bottom rolls Bare perfectly plane. The lower roll 13 is driven by a belt-pulley in the usual manner, and imparts rotation to the remaining rolls by reason of the said rollsbemg in contact with each other. Theintermediate calenderrolls, B", are each provided at one end witha reduced neck, I), the diameters of the necks of all the rolls B being equal.

0 represents a pair of bearing boxes or blocks which are bolted on the frontside of the frame, at the upper end thereof, and in the said bearing-blocks is journaled a shaft, D, which is provided at one end with abelt-pulley, E. The said pulley is arranged in line with one end of the top calender-roll, the lower side of the said pulley being slightly out of contact near the upper side of the said roll.

Frepresents a pair of beari ng boxes or blocks which are bolted to the rear side of the frame at a slight distance below the top calender-roll B. In the said bearing-blocks is j ournaled a horizontal shaft, G, which is provided at one end wit-h abelt-pulley,H,the diameter of which is slightly less than the diameter of the top calender-roll, and the front side of the said pulley is arranged in line with the rear side of the top intermediate calender-roll B Irepresents an endless belt of suitable width, which connects the pulleys E and H and passes over the rear upper side of the top calender- 5 roll 13, the said belt bearing on one end of the said roll.

K and K represent a pair of belt-pulleys which are journaled at the front side of the frame A, the pulley K being arranged slightly above the upper intermediate calender-roll B and the pulley K being arranged slightly below the lower intermediate calender-roll. Both pulleys K and K are journaled in front of the calender-rolls. 6

L represents an endless belt, the width of which is somewhat less than the width of the necks of the intermediate calender-rolls, and thesaid endless belt connects the pulleys K and K and bears against opposite sides alter- 7o nately of the necks of the calender-rolls B.

M represents a belt-pulley, which is j on rnaled in one side of the frame A, in rear of the intermediate calender-rolls and at about the center of the series. An endless belt, N, connects the said pulley M with the necks of the rolls B", the said belt N being in contact with the rear side of the belt L while it is being led through the rolls. The pulley M has flanged edges M to keep the belt N in line.

The operation of my invention is as follows: The lower calender-roll B is rotated in the direction of the arrow a, (shown in Fig. 2,) thereby causing the series of calender-rolls to rotate and the belts I, L, and M to run in the directions indicated. by the arrows in Fig. 2. The web of paper from the paper-machine is caught at its free end by an attendant, and is directed to theupper calender-roll B, one side or corner of the web of paper being inserted between the upper side of the top calender-roll and the opposing lower side of the endless belt I. As the roll rotates the web of paper is carried by it until it reaches the point where the rear side of the endless belt L and the front side of the endless belt M meet on the front side of the neck of the upper intermediate roll 13*, thereby guiding the edge of the web of paper to the said belts,.when it is instantly caught between them and is carried through the series 100 5 lower roll 13, from which the web of paper passes rearwardly, as indicated by the arrow in Fig. 2.

As the necks of the intermediate calenderrolls are all of the same diameter, the belts L [O and M are moved at the same rate ofspeed and the web of paper is led through and between the series of rolls at a rate corresponding to the rotation of the said rolls, and without causing the paper to become creased or 1 wrinkled while it is being ealendered.

By means of my improved devices hereinbefore described 1 am enabled to entirely dispense with the services of the operatives who are usually employed to guide the web of pa- :20 per through the rolls.

Having thus described my invention, I claim In a machine for calendaring paper, the combination of the intermediate rolls 13 having the necks b, and the endless beltsLand M, passing over the necks of the said rollers and arranged on the opposite sides thereof alternately, for the purpose set forth, the top roll 13, the pulleys E and H, the latter being arranged below the top roll and on the rear side of the upper roll 13, and the endless belt I, connecting the pulleys E and II and bearing on the upper rear side of the top roll 13, for the purpose set forth, substantially as described.

In testimony that I claim the foregoing as my own I have hereto aflixed my signature in presence of two witnesses.

GEORGE DUNN.

Witnesses:

JOHN DICLAUGHLIN, T. A. BOYNE. 

